Chemical Oceanography and the Marine Carbon Cycle by Steven R. Emerson, John I. Hedges

By Steven R. Emerson, John I. Hedges

The rules of chemical oceanography offer perception into the approaches regulating the marine carbon cycle. The textual content bargains a heritage in chemical oceanography and an outline of the way chemical components in seawater and ocean sediments are used as tracers of actual, organic, chemical and geological tactics within the ocean. the 1st seven chapters current easy issues of thermodynamics, isotope systematics and carbonate chemistry, and clarify the impression of lifestyles on ocean chemistry and the way it has developed within the contemporary (glacial-interglacial) prior. this can be by means of themes necessary to knowing the carbon cycle, together with natural geochemistry, air-sea fuel trade, diffusion and response kinetics, the marine and surroundings carbon cycle and diagenesis in marine sediments. Figures can be found to obtain from www.cambridge.org/9780521833134. excellent as a textbook for upper-level undergraduates and graduates in oceanography, environmental chemistry, geochemistry and earth technological know-how and a important reference for researchers in oceanography.

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Figure 2:4: A bar graph representing the results of the Mackenzie and Garrels (1966) mass-balance calculation. The bar length is the total number of moles of the ion delivered to the ocean in 100 million years. 4. 41 42 GEOCHEMICAL MASS BALANCE Figure 2:5: A schematic representation of the long-term, global carbon balance between the atmosphere, land and ocean. Flow (1) represents CO2 consumption from the atmosphere by weathering and the transport of HCOÀ 3 to the sea. Flow (2) is the return of CO2 to the atmosphere by precipitation of CaCO3 in the oceans.

De Villiers, S. (1994) The geochemistry of strontium and calcium in coralline aragonite and seawater. D. thesis, University of Washington, Seattle, WA. DoE (1994) Handbook of Methods for the Analysis of Various Parameters of the Carbon Dioxide System in Seawater, version 2, ed. A. G. Dixon and C. Goyet. ORNL/ CDIAC-74. Dugdale, R. C. and J. J. Goering (1967) Uptake of new and regenerated forms of nitrogen in primary productivity. Limnol. Oceanogr. 12, 196–206. Eppley, R. W. and B. J. Peterson (1979) Particulate organic matter flux and planktonic new production in the deep ocean.

A complication arises in interpreting the incubation data because photosynthetic organisms are both autotrophic (during the day) and heterotrophic (during both day and night). 4 OCEAN BIOLOGY Although the net result is autotrophic, they both create organic matter and respire organic matter at different times in their metabolic cycle. The creation of organic compounds from DIC by phytoplankton is called gross photosynthesis. The net result of phytoplankton autotrophy and heterotrophy is called net photosynthesis.

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